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Waterproof RECH-4-0.3mm² Transverse Watertight Transmission Cable for Underwater equipment

Type: RECH 
Spec.: 4*0.3
Sheath: Rubber or PUR
  • RECH 4*0.3

  • RONA

  • 85444929

Availability:
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Product Description

The RECH-4-0.3mm² Transverse Watertight Cable is a dedicated transmission cable developed by RONA Cable for the underwater industrial automation sector. It focuses on solving the challenge of stable low-voltage signal and power transmission in high-salt, high-humidity environments. The product features a dual-protection structure of "external sheath water repellency + internal water blocking". Through special processes, it achieves full cross-sectional water blocking, effectively preventing water penetration along gaps between cores. Combined with a high-flexibility conductor and corrosion-resistant sheath design, it can withstand mechanical stress from underwater pressure and equipment towing while resisting seawater corrosion and electromagnetic interference. This provides continuous and reliable "nerve conduction" assurance for underwater automated equipment.

Unlike traditional waterproof cables that rely solely on outer sheath protection, this product achieves a waterproofing upgrade at the structural design level. Even if the outer sheath is accidentally damaged, the internal water-blocking material quickly expands to form a sealing barrier, preventing moisture intrusion into the cable core and avoiding short circuits or equipment failures. This significantly enhances the safety and stability of underwater operations.

Structural Design

  • Conductor: Multi-strand stranded high-purity oxygen-free copper (purity ≥99.95%). Conductivity complies with IACS standards, offering excellent oxidation resistance. Maximum conductor resistance at 20°C is ≤12.10 Ω/km.

  • Insulation Layer: Polyvinyl Chloride (PVC) insulation, thickness 0.80mm, insulation resistance ≥100 MΩ·km, effectively isolating core signal crosstalk.

  • Water-Blocking Layer: Uses water-blocking tape and yarn made from polyester fiber composite high-water-absorbent material. Water absorption expansion rate reaches hundreds of times its own volume, forming a dynamic sealing barrier.

  • Sheath Layer: Black silicone rubber sheath (RAL9005), thickness 1.50mm, featuring wear resistance and weather resistance. Wear amount ≤0.1mm/1000 friction cycles.

  • Shielding Layer: Tinned copper wire braid shielding, coverage ≥90%, combined with a bare copper tape drainage layer. Grounding resistance ≤2Ω.


Specification

ItemParameter
ModelRECH-4x0.3mm²
Number of Cores4 Core
Conductor Cross-Section0.3mm²
Core Wire ColorsRed, Yellow, Blue, Green/Yellow
Insulation Thickness0.80mm
Shielding TypeTinned Copper Braided shielding (Coverage ≥85%)
Sheath MaterialCR
Rated Voltage300/500V
Operating Temperature Range-40°C to +90°C
Minimum Bending Radius

Fixed Installation: 10×D;

Movable Installation: 5×D

Test Voltage2000V/5min
Certifications/StandardsCE, RoHS, IEC 60332-1
Packaging Length100 meters / coil (500-meter reels customizable)


Applications

  • Underwater Automation Equipment Connection: Power and control signal transmission for Remotely Operated Vehicles (ROVs) and underwater manipulators, adapting to frequent bending and towing requirements.

  • Seabed Monitoring Systems: Data transmission lines for seabed environmental sensors and water quality monitoring terminals, supporting stable real-time monitoring data transmission.

  • Underwater Industrial Facilities: Wiring for subsea instruments on offshore oil & gas platforms and underwater security equipment, resisting high-salt corrosion and seawater pressure.

  • Nearshore Automation Engineering: Connection cables for aquaculture automation equipment and tidal energy power generation devices, adapting to intertidal zone wet/dry cycle environments.

Other water operations.


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RONA is a premier high-tech company specializing in the research, design, and production of special flexible cables. We provide reliable connectivity solutions through professional engineering technology and rigorous manufacturing standards.

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